Cold-air-supplying apparatus



June 14, 1927.

R. RODRIGUEZ GOLD AIR SUPPLYI'NG APPARATUS Filed 001:. 8. 1924 INVENTOR agoertofaaigqj ATTORNEY W V i IIII(III!I;IIIIIIIIIIIII IIIIIIIIIII/l L? in "II/11111111111 III/111111 Pumas June 14, .1927."

NIT D STATES-1 nonnn'ro nonnmunz, or narrow, meme;

eonn-nnasurrnxmo' arrana'rus'.

This invention relates generally to a cooling apparatus intended. for use in su plying cool air to halls, rooms, restaurants, s o s or the like, the invention havin for an 'ject the provision of a novel an simple apparatus of this type, a further specific object -relating 'to the provision of automatically adjustable heat insulating plates that control the entrance and exit ends of the cooling,

box.

For'further comprehension of the invention, and of the objects and advantages ther of, reference will be had to the follow.

ing escription and accompanying drawing,

and to the ap endedclaimsin which the various novel eatures 'of the invention are more particularly'set forth.

Fig. 1 of the drawing is a side view of my improved cooling apparatus.

. ig. 2 is-a transverse sectional view there-- of taken on the line '2-2 of Fig. 1.

i 3 is a fragmentary longitudinalflsee.

tiona view, this view being taken-on the line 3-3 of Fig. 2.1".

.' Fig. 4 is a face view of the control switch,

indicating also the electrical connection.

. As here embodied my improved cooling p aratus comprises a box which is pro-w 'ed at o posit'e ends with the heads 11L mgthe o ings mto the pipes-12. These e top of the box 10 may be covered eachforme with a series of ape ures. Connected-at opposite ends to these heads, and regiesterin with the a rtures therein, are tu s. 12 w ich extend t rough the box from end to end thereof and through which the air to-1be,cooledpasses.' The {box 10' is' adapted .to be filled with ice, being hereshown as formed in the tOP'Wlth a pair'of doors 14 through whichthe ice maybe inserted into the box, and with a drain 15, at the bottom. At its entrance end the 1 box is covered with a fine mesh wire screen 1.6. Connected-to'the exit end of the box is a tapering member 17 that has a pipe or conduit 18 connected. thereto, this pipe leading to the casing of an air blower indicated genorally at 19- and having therein an ordinary helical fan 20 that may be driven by suitable means such asthe electric motor 21. 1

1 with a number of apertures'25, therein that In order to retard the melting, of the ice I provide at each endof the box a plate 24 of almost ual area to the cross sectional area of the bom these plates being located adjacent the heads 11 and being formed cock in the box, when the apparatus isnot muse,"

Application flled October 8, 1924. Serial l l'o. 742,289.

may be moved into and out of registry with the ends of the pipes 12 by vertical movement of the plates. These plates are preferably constructed to be heat insulating as will be understood. Connected to the to of each' plate, is a cord 26, these cordslea ing upward through apertures inthe top of the box and around suitable pulleys 27 and being attached. at their other ends to the respective pulleys 28 fixedon a common shaft 29 that is mounted ina bearing'bracket 30 .on top of the box 10; Connected to one of the pulleys 28, eccentrically thereof is a rod that is connected also to the end of the plunger 36 of a solenoid 37 mounted on top of the box 10, so that upon energizing of the solenoid the cords 26 are pulled to raise the registry with the pipes 12. shaft 29 between the pulleys 28 is a disk 40 having in its periphery a notch 41 that is plates 24 and move their a ertures into .ixed to the 5 plates raised, this pawl being ressed against I i the disk by a spring 43. e pawl 42 is piovided with a tail-piece 42' on which is ed the armature 44 of an electromagnet 45 which, when energized lifts the allows the plates 24 to owl and arts on' by a housing 46.

A control switch ranged to automatically lift the plates 24 to open the ends of the p1pes12 when the motor 21 is started, and to lift thepawl 42 to stopped. is switch comprisesia base 50 is provided and; is arallow the lates to drop when themotor is on which-are mounted two pairs'of spring contacts. Each pair comprises a short contact member 51' and a lon er con'tact'memher 52 to the outer' end of which is hinged afinger 53 that: has a tail-piece 53' projecting 4 along the said member to prevent swinging movement inone direction movement in the other directionbeing yieldingly resisted by the spring 54. Upon the base. is pivoted as at 55 switch arm 56 thatcarriesa pin or'stud. 5'1 that is adapted to bear-Jon the'fin re 5 and sololose one pair of, contacts eac the arm 56-is swung between open and closed positions: The contacts that are closed when 1 i the switch arm swings to circuit closin position are wired to the solenoid 37, whi efthe other pair of contacts, which are closed momentarily when the switch arm swings to open position, are Wired to the electro-mag net 45.

In the operation of the device, the blower and ice box may be positioned where desir able, and when the switch arm is thrown "to close the circuit to the motor 21 the solenoid is momentarily energized and the pulleys 28 rotated to lift the plates 24, the pawl dropping into the notch 41. When the switch arm is moved in the opposite direction the circuit to the electro-magnet 45 is closed and the pawl is lifted, the plates 24 then drop ping by gravity to position closing the ends of the pipes 12.

Having thus described my invention what I claim as new and desire to protect by Letters Patent of the United States is as follows:

In a cold air supplying apparatus, having an ice box housing air tubes provided with said slidin shutters, pulleys mounted on the top o'f'sai 'ice box, said cords being guided over said pulleys, a bearing bracket mounted on the top of said ice box, a shaft rotatable in said bearing bracket, pulleys fixed on said shaft, said cords bein attached to said last mentioned pulleys, a disc also mounted on said shaft, the periphery of said disc being formed with a notch, another bracket mounted on the top of said ice box, a pawl pivotally mounted on said last mentioned bracket, the front of said pawl being engageable with said notch to retain the last mentioned pulleys in position with the shutter arrangement open, an armature fixed to the rear of said pawl, and an electromagnet on said last mentioned bracket, said electromagnet when energized being capable of moving said pawl to release the pawl from the said notch.

ln'testimony whereof I have afiixed my signature.

- ROBERTO RODRIGUEZ. 

